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    <title>Document</title>
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<body>
    <script>
    console.log(1+"2"+"2");//122
    console.log(1+ +"2"+"2");//32
    console.log(1+ -"1"+"2");//02
    console.log(+"1"+"1"+"2");//112
    console.log("A"-"B"+"2");//NaN2
    console.log("A"-"B"+2);//NaN

    </script>
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